Considering the great amount of statistical research the author has done, it's surprising that he's drawn some dreadful conclusions. He seems to be saying that in the face of incomplete/ambiguous information, people should form judgements on other people on the basis of racial/gender/physical stereotypes. The problem with stereotypes isn't that they have no basis in reality. The problem with stereotypes is that they…
http://www.rci.rutgers.edu/~jussim/unbearable%20accuracy%20o...
Interestingly, stereotypes based on political party membership are consistently inaccurate.
As the Kahneman quote I posted elsewhere shows, the reality is that resistance to reasoning using certain valid stereotypes is an ethical position, based on a desire to build a better society. It has costs in terms of sub-optimal decision making. In a democratic society, we should acknowledge this, rather than falsely and naively claiming that stereotypes are false.
> I would hate to be judged and discriminated against on the basis of stereotypes, and hence, I refrain from doing the same to others.
Other people are not obliged to make bad decisions because of your feelings. They should make the ethical decisions they feel are right.
Statistical models are quantitative reasoning based on stereotypes. Every time you get a credit report or an insurance policy, that's based on nothing but stereotypes: just legally permissible ones, built into mathematical models. 25 year old men who buy red cars have a certain accident rate, therefore you're going to be charged for that rate.